Loose-leaf post binder



June 28, 19494. s, SEGAL 2,474,698

LOOSE-'LEAF PosT BINDER' Filed Aug. 7, 1944 42 Sheets-Sheet 1 Eng l lvEN'roR l51am/Ez. SEG/u.

ATTORNEY dJune 28, 1949. I s, SEGAL. 2,474,698

LOOSE-LEAF POST BINDER Filed Aug. 7, 1944 l 2 Sheets-Sheet 2 35 'f4 545E INVENTOR SAMUEL SEGAL ATTORNEY Patented June 28, 1949 UNITED STATESPATENT vSamuelSegal, New York, N..Y.., assignor Wil? `son-Jones yCo.,Chicago, Ill., `a corporation of Massachusetts Application August 7,194i, serial No. 548.431 sacarme. (c1. 12e-s1) The subject matter ofthis invention is a loose leaf binder of the type wherein arstack ofpapers are guided onlsectional posts and removably interposed between 'apostsupport anda clamping follower. Specifically the invention vdealswith improved detachable `sectional posts for loose leaf binders for`'extending or reducing the stack capacity between the post supportandclam'ping follower. Where sectional :posts are utilized in looselea'f binders, the base `section thereof is generally spun 'on 'andixedly secured to the lower wall `of the `post supporting Jiiattenedtube. In many instances during use the base section of a sectional postbecomes loose and undesira bly rotates, consequently causing the wholesec tional post assembly to bodily 'turn with it. Also in practice it isdiiiicult to repair the ybaseV `section in that it is 'not removablyconnected to its suppotingtube. Oneoftheobj'ects of 'the prese entinvention is to eliminate these disadvantages in the `provision ofspaced paper A"guiding sectional posts having bas'e sections removablybut non-rotatably interlocked lfvvitli `the llower wall `of the `postsupporting r'attene'd tube and sustained against involuntary `tiltingfby the Iupper wall of the supporting flattened ltu'be, and associatedwith movable means `displalce'altlle relative to fthe base section andcooperating with tlie'npperwall of the supporting flattened tube to:preclude longitudinal displacement of vthe ibase section. A furtherobject of the invention is realized lin permitting `the sectional poststo be quickly and readily assembled and desirably secured to 'thesupporting flattened tube. A :further and in1= portant object isconcerned with the provision of means to prevent the basesection of thesectional posts from turning or becoming loose. Another object isrealized in the provision of a slotted post base section andsuperimposed dee tachably associated slotted intervening and tope mostpost sections for cooperating with novel wrench means adapted to bodilyreceive these sections and removably interlock selectively with thelongitudinally arranged `slots of these seca tions for coupling orvunfaste'ning rthe latter selectively.

In the drawings:

Fig. 1 is a fragmentary view of the loose leaf .binder showing oneembodiment of the sectional posts according to my invention.

Fig. 2 is a vertical `sectional view `on the line 2-2 of Fig. 31,however, illustrating the clamp-4 ing follower in dash and dot lines.

Fig. 2e is a fragmentary view of `Fig.` 2 part-icularlyifiliustrating`the rotatalvlel slee'v'e associated 2 with lthe base `sectiorrof ya:post removably locked t'o the Cpost supporting tube.

Fig. -Zbi's a detailed view'of Fig. 2a.

fFig. 3 Vis la `fragmentary perspective and exploded view of Fig. 1; p

fFig. `4 is `a sectional view on the line 4-4 `of Fig; 2.

Fig. 5 is a plan viewof a wrench according to the invention.`

Fig. 5'a ris a perspective view of a lower :sectional post.

Fig. 6 isa View similar to Fig. `2, depicting a slightly Lmodiedsectional post. y l

rFi'g. `'l is an exploded perspective view of Fi'g. '6. K

fFig. 8 is a view similar to Fig. 'l illustrating a sectional postaccording to Fig. 2;

lFig. `9 is -a sectional 4view on the line 9--9 of Fig. 10.

Fig. 10 is asectional View on the line lll- I0 of Fig. `9.

Fig. 11 is an 'exploded perspective View 0f a Sectional post utilizingthe pin `anchoring means illustrated in Figs. 49 and 10;

iFig. '12 is a view similar `to Fig. l1 showing a sectional post of thetype illustrated in Fig. 2.

Fig. 13 isa `broken elevational view of a sectional ;-post, partly 'insection of the type illus-v trated in Fig; lfl Ahowever removablyanchored to `the lower hollow supporting bar by a slidable insert.

Fig. 14 ris `a `longitudinal sectional `View on the line Ill-I4 of Fig.13.

Fig. 15 is a vertical sectional `view Aon the line lia-MI5 -of Fig. 14.

Fig. 16 ris aperspective and'exploded view or" Fig. 13,I and Fig. 17 isa view similar to Fig. 16 however illustrating another `i'orm of aslidablel locking nSIltr;

Illustra-tive of the embodiments disclosed, the loose leaf :binder isgenerally denoted B and comprises a pair of spaced covers C swingablyattached `to upper zalt-id vlower spaced tubular :bars

or headers F and S respectively. For purposes of lspecicatiom tubularbar S `may Ibe'cons'ider'ed as 'a support `for the pair of spacedsectional posts `P on which the 'stack fof papers 'PP are removablymounted! 'The bar F is a compressor or follower for desirably andclosely holding the stack of` papers' against the 'lower supporting "bar S as is welfllunclerstood in theartl According to tlf'iel embodimentillustrated in tom irait wall"- provided-With a pa'ir rof spaced ircular openings as II, each interrupted by a bridge or key I2 to definespaced openings or key receiving means and has its upper flat wall IIIprovided with a pair of spaced circular openings I5 registering with thelower circular openings II, and each opening I5 merges with a notch orkeyway I8 for purposes hereinafter setl forth.

Alined or registering openings II and I5, position or locate the loweror base sections I'I of the sectional posts P relative to lower bar S.To this end, each of the lower sections I'I is provided with acylindrical head I8 characterizing spaced keys removably and closelytting into and positioned by the wall of opening I5 and having thediametrically disposed slot I9 or keyway for closely and removablyreceiving the bridge or key I2, the latter serving as stop means tolimit the insertion of the lower base sections I'I into the supportingflattened tube S.

For anchoring the lower sections I1 to the supporting tube or bar S,clamping means in the form of split sleeves 20 are utilized. Each ofthese sleeves is split lengthwise to provide a keyway or slot 2l. Thesesleeves closely and rotatably but frictionally and resiliently surroundthe cylindrical body of the lower sections I'I and each sleeve 28 ischaracterized by an outwardly extending wing portion or key 22.

Each of the lower post sections I'I may be considered as bearing meansfor the concentrically arranged rotatable sleeves 28 and when theseparts are assembled, wing portions 22 may be conveniently received innotches as I6 for facilitating reception of the slotted head I8 on thecooperating bridges I2. However the Walls of openings I5 characterizemeans closely and removably encompassing the sleeves 2|] while heads I8serve to limit displacement of sleeves on the lower sectional posts il.

By utilizing either end of the wrench W shown in Fig. 5, the anchoringsleeves 20 may be selectively rotated relative to the supporting bar Sand its bearings or lower base sectional posts II and the key or wing 22which is under the top wall III of the lower supporting bar is rotatedto clear or be out of alinement with notch I6 and inasmuch as its lengthclosely approximates the distance between the lowerand upper flat wallsII) and I4, the lower or post base sections l1 are removably locked andretained against longitudinal displacement by reason of the cam faces 22frictionally engaging the inner surface of the upper wall III.

Specifically the wrench W embodies a hooked Vend 23 and a perforated end24 having its circular opening 25 interrupted by a lug or key 26. Aspreviously stated, either end of wrench W may be employed to rotate alocking sleeve 20 of a base section Il. If this hooked end 23 bepositioned in keyway 2i or if the perforated end 24 be shifted over `theresilient sleeve to position key 26 into the walls of its slot or gap as2I the sleeve upon actuation of the wrench may be rotated to a lockingrelation if unlocked or to` an unlocked relation if locked as is wellunderstood.

In Fig. 1 each sectional post is shown as having three sections, to wit,I'I, 21 and 28. rOf course as the stack of papers becomes largerintervening sections as 2l may be provided. And where the stack isreduced these intervening sections may be eliminated. It should beunderstood, however, that each of the intervening post sections as 21and its topmost sections 28 each include an elongated slot or keyway 29running lengthwise thereof to coact with either endl of wrench W fordetaching from or attaching the post sections to each other. For thispurpose in the form according to Figs. l and 2 the upper portions of thelower and intervening post sections I'I and 2'I each embody threadedstems 38 (also illustrated in Fig. 8) removably connected to thethreaded recess 3i in the lower portions of the intervening and topmostpost sections 2'I and 28.

In all of the embodiments disclosed, the lower base sections of theseveral sectional posts are removably locked relative to the lowersupporting bar S, and thus may be if desired readily and quicklyreplaced by other similar base sections. Moreover eachV of the basesections I'I is provided with non-circular means removably interlockedwith the lower wall of the bar S and consequently is prevented againstturning. Furthermore the topmost and intervening sections are not onlyremovably mounted but the keyways as 2S provide means for facilitatingassembly .of these parts in that the wrench may be quickly fitted overone of the post sections to removably interlock key 26 in keyway 29.instead of fumbling needlessly in the attempt to thread the hooked endor crank 23 of the wrench into a conven:

tional perforation (not shown) on the post sections although by thepresent invention the hooked end 23 may be still employed in connec-vtion with actuating or rotatingthe slotted sections of the sectionalposts herein described.

Where the sleeve 20 has been rotated to permitV the cam portion 22 tofrictionally lock with the.

lower bar S (Fig. 4), base section I'I is held against longitudinaldisplacement by wing` 22 abutting the inside faces of the lower andupper Iwalls IIJ and I4, is held against rotational dis placement by thespaced keys defined by the slotted head I8 cooperating withbridge I2,andhad to the intervening sectionsV 2'! for unthreading the latteralthough access to the entire sectional post P may be had by simplyremoving the upper cover C and thereafter each sectional post P may beremoved as a unit if desired by utilizing the wrench W and rotating itsrespective sleeve 20 until its cammed wing 22 registers with itscooperating slot I6 and subsequently the sectional post may be removedas a unit from bar S. It is apparent therefore, that not only may eachof the sections of the sectional post be readily dismantled but eachsectional post may be removed bodily from the supporting bar S.

In the form according to Figs. 6 and 7, the lower or base'sections I'Iare each provided with a non-circular key or lug 35 removably andclosely positioned in a correspondingly shaped opening or key receivingmeans 35 in the bottom flat wall I0 of the hollow supporting bar S forremovably locking base section Il against rotation. Lug or key 35depends from head or flange 3'! removably seated against the flat wallIl) while sleeve 20 is seated on' the annular stop flange 31. In other'aspects the embodiment illustrated in Figs. 6 and 7 is along the linesof form shown in Figs. 1-3 exceptthat the base section I1 andintermediate section 21 each include a threaded recess 38 for removablyreceiving the depending threaded stems 39 of the intervening 'andtopmost sections 2'I 'and 28.

.In connection with the form illustratedv in annees8,`rthe1iconstruction is along `the lines Aof the embodiment disclosedin Figs. `6 fand- '7 except thefstemsiSill of the base and interveningsections will' 1and T21 `cooperate with the threaded sockets lor`recesses 3i in the intervening and topmost sections 21 and 128 as inthe case oi the form shown in Figs. 1-3 inclusive. l

@gaming `now `to the form illustratedin Figs.` 9mm :wherein the base``section ll is removably` sustained by the expanded intermediate `por--tions `.idll of the slidablyA guided looped spring yor pinirdisengageably interlocking with the Walls ofsigroove 143. It `will benoted that the reduced portions!!! :is` resiliently and removablystraddled by che .arms `of the pin or loop il and the arms ofltheiloop1.cooperate with `wall lli to holdfbase section:` i1 againstlongitudinal displacement, that isyiagainst. zwithdrawal from the bar S.After sectionfil `is positioned `in the tube S; it is also locked by thehair pin slizaped loop as previously stateglxand to `remove the pin the`crank portion 2319i rthe` Wrench :may be utilized to act against theClosed `end d'5 :of the `looped pin as indicated imFig. 11.0. In otheraspects, the form shown in Figs. 9-.ll is along the lines` of the formillustrated in Figs. 6 and 7.

."il'helembodiment `illustrated in Fig. 12 conforms to .the .speciesshown in Fig. l1 exceptthat thi@ base and `intervening sections areprovided with `threaded.stems for removably threading into :threadedsockets in the lower portions of the intervening and topmost sections. i

`In Figs. 13-16, the form illustrated is along thalineSfofthe embodimentaccording to Fig. 11 except that the locking pin has been replaced byaslidable spring plunger or insert 50 having a tail `,portion 5d'provided with thekey shaped slot 5I and embodying the dependent curvedwings .512 `merging with the closure head 53 terminating in a lower wall5i receivable in the brof 'the iiattened tube S.

In the matter of assembly, spring insert 50 is rstitelesooped partlywithin the tube S so that theiexpandedportion 53 of opening 5I registerswithwthealined openings 3d and Iii of tube S. Hence base section `il maybe inserted into and through .openings l5 and dit to position key or lug35 `into the key receiving means or opening 35, .Thereafter insert 5t ispushed further in- Wax-idly `causing the rectilinear sides till of therestricted. slot il `of the opening 5i to enter groove `43 and removablystraddle the reduced portion 444 of section il. whereby the insert `isremovably interlocked with base section l'l and cooperates with the`wall i4 to prevent longitudinal displacement of this base section, theclosure or plug head 53' of the spring or insert 5 0 having 4shoulders56 to limit the inward displacement of` the` insert `while its arcuatewing portions 52 and the lower portion 5i resiliently or frictionallyengage the walls of the bore of tube S. To remove the base section il',head 53 `s.grasped and pulled outwardly, hence un locking base `sectionil by` positioning opening uabout the body of section lil" and thelatter may be linearly removed from the tube S. `In other.aspects,`theform according to Figs. 14-16 isiaong `the `lines of the embodimentillustrated.`

in fEig. 11.

.According to the form illustrated in Fig. 17, base section I'l is iirstpositioned in the alined openings Al5 and (it. Thereafter' split springbody @6 0 of the locking closure plug or insert` gonerally fdenoted 61may be inserted into the bmzf "llbe: Wherebythe spaced ,prongs t2 arereceived in Athe groove 43 and :straddle fthe reduced portion 44 of'basesection lil .after'which the sides of the `elongated openingrGBSenterzgroove 43 and interlock with the `sides of the reduced portion orneck M. The tail `portion .6'4 embodying the prongs 62 is a fhollowmember having its top wall 65 and its depending arcuate vwings as 66frictionally and removably cooperating with the :walls of the tube NSand `although Iits upper Wall :65 `bears against the upper wall gill to@prevent longitudinal `displacement foi the :base .seotion I1, the head61 is hollow and .of the type illustrated in Fig. 16 and includes stopshoulder F38 to limit the insertion of the plug into the bore of tube S.To remove ythe `base section i121, head 6l is grasped and shiftedoutwardly, 'thus freeing or unlocking section i1 and the 'latter may beslidably withdrawn from the tube. Otherwise the form illustrated in Fig.l'l is `along the lines shown in Fig. 16.

By the several arrangements 'disclosed the base `sections arenot onlyremovably interlocked against rotation but are further removably heldagainst accidental longitudinal displacement and against withdrawal fromthe supporting 'tube S although sustained against tilting :by theclosely confining wall of the bore or .opening i5.

Various changes may be made inthe details for construction andarrangement of parts Without departing from the spirit .of the inventionor sacricing any of :the advantages thereof inherent therein.

I claim:

1. In a `loose `leaf binder, a post, :a tubular member having a llovveriiattened `wall including key receiving means and having .an upper`flattened wall including an opening registering with said key receivingmeans, said post adapted to be received into said tubular `memberthrough said opening `and having terminal key means removably` and:non-rotatably interlocked with said key receiving means, and lockingmeans movably carried by said post and `cooperating with saidupper Wall`to preclude withdrawal of said post from said `tubular member.

2. In a `loose leaf binder, a cylindrical post characterizing a basesection, a tubular member having a lower flattened wall includingnon-circular key receiving means `and `having an upper flattened Wallincluding a circular openingregistering with said key receiving means,sai'dpost adapted to be removably receivedinto said tubular memberthrough said opening and having noncircular key terminal means removablyand non rotatably interlocked with said key receiving means, and lockingmeans movably carried by said base section and cooperating with said`upper wall to `preclude withdrawal of said `post from said `tubularmember.

3. In a loose `leaf binder, a post, a tubular member having a lowerflattened wall including key receiving means and having an upperiiattened wall including an opening registering with said key receivingmeans, said post adapted fto be received `into Said tubular memberthrough said opening and having terminal -key means `removablyandnon-rotatably interlocked with sai-d key receiving means, and lockingmeans rotatably carriediby said post and having wing means removablyinterposed between said upper and lower Walls to preclude withdrawal ofsaid post from,

ceiving means and having an upper ilattened wall including a circularopening registering with said key receiving means, said post adapted inpart to be received into said tubular member through said opening andhaving depending and at least in part non-circular key means removablyand non-rotatably interlocked with said key receiving means, and asleeve closely and rotatably surrounding said post and having a winginterposed between said upper and lower walls and frictionallycooperating with said upper wall to preclude withdrawal of said postfrom said tubular member.

5. In a loose leaf binder, a post, a tubular member having a lowerflattened wall including key receiving means and having an upperflattened wall including an opening registering with said key receivingmeans and including a notch merging with said opening, said posiIadapted to be received into said tubular member through said opening andhaving depending key means removably and non-rotatably interlocked withsaid key receiving means, and a sleeve closely and rotatably surroundingsaid post and closely and removably receivable in said opening andhaving a wing portion removably receivable in said notch and removablyreceivable between said lower and upper walls and cooperating with saidupper wall to preclude withdrawal of said post from said tubular member.

6. In a loose leaf binder, a threaded post, a tubular member having alower flattened wall including key receiving means and having an upperattened wall including an opening registering with said key receivingmeans and including a notch merging with said opening, said post adaptedto be removably received into said tubular member through said openingand having depending key means removably and nonrotatably interlockedwith said key receiving means, a sleeve longer than the height of saidmember and closely and rotatably surrounding said post and in partclosely and removably receivable in said opening and having a wingportion removably receivable in said notch and removably receivablebetween said lower and upper walls and cooperating with said upper wallto preclude withdrawal of said post from said tubular member, and saidsleeve having an accessible slot.

7. In combination, a tubular member having a lower flattened wallincluding in part noncircular key receiving means and having an upperflattened wall including a circular opening registering with said keyreceiving means and including a notch merging with said opening, acircular threaded post adapted to be removably received into saidtubular member through said opening and having depending key meansremovably and non-rotatably interlocked with said key receiving means,and a longitudinally split annular sleeve longer than the height of saidmemsaid member and adapted to be closely and re-'" movably received intosaid tubular member` through said opening and having terminal key meansremovably and non-rotatably interlocked with said key receiving meansand having an intermediately arranged reduced portion, and locking meansclosely and removably straddling said reduced portion and cooperatingwith said upper wall to preclude withdrawal of said post from saidtubular member.

9. In combination, a tubular member havingr a lower flattened wallincluding key receiving means and having an upper flattened wallincluding an opening registering with said key receiving means, athreaded post longer than the height of said member and adapted to beclosely and removably received into said tubular member through saidopening and having terminal key means removably and non-rotatablyinterlocked with said key receiving means and having a re' duced partdefining a groove with the body of said post, and spring locking meansreceivable in said groove and removably straddling said reduced part andcooperating with said upper wall to preclude Withdrawal of said postfrom saidA tubular member.

10. In combination, a tubular member having a lower flattened wallincluding key receiving means and having an upper ilattened wallinclud-I ing an opening registering with said key receiving means, athreaded post' longer than the height of said member and adapted to beclosely and removably received into said tubular member through saidopening and having terminal key means removably and non-rotatablyinterlocked with said key receiving means and having a reduced partdefining a groove with the body of said post, and a looped springremovably receiv-` able in said groove and resiliently straddling saidreduced part and cooperating with said upper' wall to precludewithdrawal of said post from said tubular member.

11. In combination, a tubular member havingl a lower attened wallincluding key receivingI means and having an upper ilattened Wallincluding an opening registering with said key receiving means, athreaded post longer than the height of said member and adapted to beclosely and removably received into said tubular member through saidopening and having terminal key means removably and non-rotatablyinterlocked with said key receiving means and having a reduced partdening a groove with the body of said post, and a slidably guided springremovably receivable in the bore of said tubular member and having anopening for receiving said post` and having a slotted portion removablyreceiv able in said groove to straddle said reduced part and cooperatingwith said upper wall to preclude the withdrawal of said post from saidtubular memb er` 12. In combination, a tubular member havingy a lowerflattened wall including key receiving means and having an upperflattened wall includ ing an opening registering with said keyreceiving' ber and having an opening for removably recev-- egresos sanipest and having a siones portion removaiblyreceivable saidgroove tostraddle saiclre- `duced.part', and cooperating with said upper Wall topreclude theswithdrawal'iof said postfrom said tubular member, saidspring having a head char- I acterizing closure means for one end ofsaid bore.

135111 combination; a tubular member having ai` lwer flattened wallincluding key receiving means andliaving an upper flattenedwalllincludinganopening registering with said key receiving meansgiiathreaded post longer than the height ofi-said member and` adapted to beclosely and removably received into 'said tubular member through saidopening and having terminal key means removably and non-rotatablyinterlocked withkey receiving means and having a reduced part dening agroove with the body of post; and aslidably guided spring removablyreceivable in the bore of said tubular member lng anppening registeringwith said` key receiving means, a threaded post longerthan the height ofsaid member and adapted to be closely and removably received into saidtubular member through said opening and having terminal key meansiremovably and non-rotatably interlocked Wit'hsaid key receiving meansand having a reduced part defining a groove with the body of saidl post,and a slidably guided' spring removably receivable ini the bore ofsaidtubular member and having spaced resilient prongs for removablyrecen/ing said post and having a slotted portion renicvably` receivablein` said groove to removably' and yieldin'gly straddle said reduced partand cooperating with said upper wall to preclude the Withdrawal of saidpost from said tubular member.

135i.v Incombination, atubular member having a lbwer flattened wallincluding key receiving meanslandihavingan upper flattened wallincludiilg4 an openingregisteringl with said key receiving means5 athreaded post longer than thel height of said member andiadapted-to'beclosely and re" movably received into said tubular member through. saidopening and having terminal key means' removably and non-rotatablyinterlocked with said key receiving means and having a reduced partdefining a, groove with the body of said post, and a `slidably guidedspring removably receivable in the bore of said tubular member andhaving spaced prongs for removably receiving said post and having aslotted portion removably receivable in said groove to straddle andremovably interlock with said reduced part and cooperating with saidupper wall to preclude the withdrawal of said post from said tubularmember, said spring having a head serving as closure means for one endof said bore.

16. In combination, a tubular member having a, lower iiattened wallincluding at least in part non-circular terminal receiving means andhaving an upper flattened wall including a .cylindrical opening invertical alinement with said key re- ITO ceiving meansj and including anotch in communicationl with saidY opening, a threaded and cylinrlricalpost adapted to be removably received in saidy tubular member throughsaid opening and having at: leastin part non-circular terminalmeanslr'emovably interlocking with said terminal receiving:means,` and asleeve longer than the height ofs'aid' member and closely and rotatablysurrounding said post and in part closely and removably receivable insaid lopening and extending alc-ove said upperflattened' wall and havinga wing portion removably receivable in said notch andremovablyreceivable between said upper and lower Walls and' having meanscooperating with saidupper wall to preclude withdrawal of said postfromfsaidtubular member.

1'?.` In combination,` a tubular member having a lower attened wallincluding at least in part non-circular terminal receiving means andhaving an upperflattened wall including a cylindrical opening in'vertical alinement with said key receivin'glmeans and including a notchin communication with said opening, a threaded and cylindrical postadapted to be removably received in said tubular member through saidopening and having at least' in part non-circular terminal meansremovably interlocking with said terminal receiving means; andalongitudinally split annular sleeve longer than the height of saidmember andl closely and rotatably surrounding said post and in partclosely and removably receivable in saidl opening and extending abovesaid upper flattened wall andhaving a Wing portion removably receivablein said notch and removably receivable between said? upper and lowerwalls and having means" frictionally cooperating with said upper wallto-preclude'withdrawal of said post from said tubular member.

` lf8. In' combination, a tubular member having a lower atftened wallincluding at least in part non-circular key receiving means and havingan upperattened" wall including a cylindrical opening inV verticalalinement with said key receiving means" and including a notch incommunication with saidi opening, al threaded and cylindrical `postadaptedA to be removably received in said tubular member through saidopening and having at least inpart non-circular terminal key meansremovably interlocking with said key receiving means, and a`longitudinally split" annular sleeve longer than the height of saidmember and closely and rotatably surrounding said post and in partclosely and removably receivable in said opening ancl'l extending abovesaid upper flattened wall and having a= wing portion removablyreceivable in said notch and removably receivable between said upper andlower walls and having means 'coooperating with said upper wall topreclude witli'drawai of said `post from said tubular member.

19. In combination, a tubular member having a lower flattened wallincluding at least in part non-circular key receiving means and havingan upper flattened wall including a cylindrical opening in verticalalinement with said key receiving means and including a notch incommunication with said opening, a threaded and cylindrical post adaptedto be removably received in said tubular member through said openinghaving an 'annular flange and having at least in part non-circularterminal key means removably interlocked with said key receiving means,and a longitudinally split `annular sleeve seated on said flange andlonger than the height of said member and closely and rotatablysurrounding said post and in part closely and removably receivable insaid opening and extending above said upper attened Wall and having awing,r portion removably receivable in said notch and removablyreceivable between said upper and lower Walls and having meanscooperating with said upper wall to preclude withdrawal of said postfrom said tubular member.

20. In combination, a tubular member having a lower flattened wallincluding at least in part non-circular and spaced key receiving meansand having an upper flattened wall including a cylindrical opening invertical alinement with said keyreceiving means and including a notch incommunication with said opening, a threaded and cylindrical post adaptedto be removably received in said tubular member` through said openingand having spaced keys removably interlocked with said spaced keyreceiving means, and a longitudinally split annular sleeve longer thanthe height of said member and closely and rotatably surrounding saidpost and in part closely and removably receivable in said opening andextending above said upper flattened wall and having a wing portionremovably receivable in said notch and removably receivable between saidupper and lower walls and having means cooperating with said upper wallto preclude withdrawal of said post from said tubular member.

21. In combination, a tubular member having a lower flattened wallincluding key receiving means and having an upper attened wall includingan opening in alinement with said key receiving means, a threaded postlonger than the height of said member and adapted to be closely andremovably received into said tubular member through said opening andhaving terminal key means removably and non-rotatably interlocked Withsaid key receiving means and having a reduced part defining a groovewith the body of said post, and a hair pin spring having spaced arms inpart removably receivable in said groove and having outwardly convex andinwardly concaved portions resiliently straddling said reduced part andcooperating with said upper wall to preclude withdrawal of said postfrom said tubular member.

22. In combination, a tubular member having a lower flattened wallincluding key receiving means and having an upper flattened wallincluding an opening registering with said key receiving means, athreaded post longer than the height of said member and adapted to beclosely and removably received into said tubular member through saidopening and having terminal key means removably and non-rotatablyinterlocked with said key receiving means and having a reduced partdening a groove with the Abody of said post, anda spring removablyreceivable in said tubular member and having spaced means iitting intosaid groove to closely and removably straddle said reduced portion andcooperating with said upper wall to preclude removal of said post fromsaid tubular member.

23. In combination, a tubular member having a lower attened wallincluding key receiving means and having an upper flattened wallincluding an opening registering with said key receiving means, athreaded post longer than the height of said member and adapted to beclosely and removably received into said tubular member through saidopening and having terminal key means removably and non-rotatablyinterlocked with said key receiving -means and having a reduced partdefining a groove with the body of said post, and a slidably guidedspring removably receivable in said tubular member and having spacedprongs deiining a slot and including free tapered terminals adapted tobe led into said groove prior to reception by the latter of the spacedsides of said slot and having an intermediate portion including anopening communicating with said slot and embodying spaced sides closelyand removably straddling said reduced part, and said intermediateportion constituting means cooperating with said upper wall to precludewithdrawal of said post from said tubular member.

SAMUEL SEGAL.

REFERENCES CITED The following references are of record in the le ofthis patent:

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